ABS XFP series Installation, Operating And Maintenance Instructions

ABS XFP series Installation, Operating And Maintenance Instructions Manual pdf 18 page image

18 Installation, Operating and Maintenance Instructions (Original Instructions)ABS submersible sewage pump XFP 80C - 201G9.7 Bottom plate adjustmentAt manufacture, the bottom plate is fitted to the volute with the correct clearance gap set between the impellerand the bottom plate (for optimum performance max 0.2 mm).9.7.1 Instructions on how to adjust the bottom plateTo reset the clearance gap following wear:(Note: when adjusting PE3 pumps, steps 1, 2 and 3 do not apply)Check the position of the alignment notch (e) in the fixing lug to determine if the bottom plate is in the fac-tory pre-set position or if the clearance gap has been previously adjusted. If previously adjusted proceed toStep 4.Remove the three screws (c) securing the bottom plate to the volute.Attention: if, due to corrosion, the bottom plate does not release freely from the volute, DO NOT force itfree by tightening the adjusting grub screws (d) against the fixing lugs on the volute as this could damagethe lugs on the bottom plate beyond repair! In that case, first remove the volute from the motor housing byreleasing the three securing screws (f) and then remove the bottom plate by tapping it free from inside thevolute using a mallet and block of wood.Rotate the bottom plate anti-clockwise through 45° from the pre-set position (a) to the secondary alignmentposition (b) and refit the securing screws.Loosen the adjusting grub screws (d) and tighten the securing screws in the bottom plate evenly until theimpeller will lightly, but freely, rub against the bottom plate when rotated by hand.Tighten the grub screws fully to secure the bottom plate in position (max. 33 Nm).Factory pre-set positionFixing lugsAdjustment position1.2.3.4.5.(c)(d)(b)(a)(e)(c)(d)(b)(a)(e)(e)(e)(e)(e)(f)(f)